Every time I get an email like the one below, I check it out on Snopes or Urban Legends, and usually they are not true, just a stupid form of chain letter spam. This one I am sorry to say is real.
"Subject: virus warning, please tell your friends
This one checks out and is a bona fide real virus so hence the warning.
Any email with "Mail Server Report" in the subject line is a new virus and ...